fgrieu

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I'm an engineer with experience in applied cryptography, in particular in Smart Card systems.


191 Answers

newest activity votes
4
What are the potential security impacts of using CRAM-MD5 for Emails, when not using an SSL connection?
4
Help me describe/identify this challenge-response protocol/algorithm?
4
Increased CRC collision probability when adding bits to input message
4
What's the difference between AES and earlier block ciphers?
2
What length should the padding be when encrypting or signing with RSA?
9
CBC-MAC , fixed length, all blocks returned
4
toy hash algorithm
3
Is it worth applying a MAC on data in a HSM?
2
Certificate == signed public key
4
SHA256 HMAC brute force with chosen plaintext attacks
5
Quality of randomness on a Linux system with haveged
5
How is CipherCloud doing homomorphic encryption?
1
Chain several RSA encryptions without increasing the message size
3
Is encrypting a single 128 bit block with AES ECB “safe”
2
Ciphertext-only attack on Simplified DES
10
Why exactly is Blowfish faster than AES?
3
Using salted hash as password for easy memorization without reuse?
7
Signature schemes for underpowered devices (8bit microcontroller)
3
“Weaknesses” in SHA-256d?
6
Why are RSA key sizes almost always a power of two?
1
Assymetric password encryption - Viable? Which algorithm?
6
Is it feasible to break Diffie-Hellman key exchange when the implementation uses a poor-quality PRNG?
3
Even passwords are vulnerable to hash collision attacks?
3
What are the constraints for an IV using AES in CBC mode?
5
BCrypt vs Key Stretching MD5
5
Is a known plaintext, ciphertext, and public-key a viable attack on RSA?
6
XOR cipher for encrypting compiled C code
13
Is this encryption algorithm build from MD5 secure?
6
Finding roots in $\mathbb{Z}_p$
3
Question about why RSA is hard to attack
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